The guy, who was playing a cop but had never held a real gun, recoiled when Selleck – a lifelong gun enthusiast and board member of the National Rifle Association – spotted him and bellowed: “Hey, YOU! What the HELL are you doing? That gun’s NOT a toy – stop waving it around!”

Turning bright red as Selleck marched over and got in his face, the
nervous doofus quickly lowered the weapon, but the star barked: “Look at
you…your finger’s STILL ON THE TRIGGER!”

Totally confused, the mortified guy sputtered: “Is the gun really loaded?”
Rolling his eyes, Selleck snapped: “No, it’s not loaded. But when you
handle a gun it’s common sense to assume it IS loaded, and NOT point it
at people!”

Filming stopped while Tom gave everyone on set a lecture on gun safety.

For those unfamiliar with “prop” guns, they aren’t props at all. Movie and TV studios use real firearms when they film. And as a result, gun safety on set in an important issue. (There have been fatal accidents in the past due to mishandled prop guns.) So, hats off to Tom for seeing to the safety of his coworkers!